Link: http://twotowersgames.com/games/rebuild-zombie
Each day you must find other survivors and put them to work, with different people having different skills. You need to scavange or grow food for the survivors. You need to build the town by reclaiming sections of land, with various buildings having different functions. All while fending off the hordes of zombies.
This is a great game with various different ways of winning, which leads to some replayability especially with harder difficultly levels. There is enough complexity to make it a proper strategy game with trade offs needed against short vs. long term goals.
Definately worth a play for the strategy flash gamer.